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SpaceX Crew Dragon spacecraft splashes down with NASA, ESA astronauts

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Update: A SpaceX Crew Dragon spacecraft carrying four NASA and ESA astronauts has safely splashed down off the coast of Florida, wrapping up an exceptionally busy four weeks of Dragon launch, docking, undocking, and recovery operations.

A SpaceX recovery technician leaps off of Crew Dragon. (SpaceX)

For the second time in ten days, a SpaceX Crew Dragon spacecraft has undocked from the International Space Station (ISS) and is on its way back to Earth.

This time around, four professional Crew-3 astronauts from NASA and ESA boarded Crew Dragon and departed the station after almost six months in orbit, handing off command and control of the US segment to Crew-4. After grappling with a 12-day delay, SpaceX successfully launched Crew-4 to the ISS on April 27th and the astronauts arrived at the station later the same day. Crew-4 was only able to launch after a separate crew of exclusively private astronauts known as Axiom-1 finally departed the ISS on April 24th.

Falcon 9 launched Axiom-1 and Crew Dragon on April 8th on what was initially supposed to be a 10-12 day mission in orbit. As a result of extensive weather-related recovery delays, Axiom-1 instead splashed down on April 25th. Those collective delays ultimately gave Crew-3 around two extra weeks in orbit before Crew-4 was able to take over, freeing them up to return to Earth.

NASA astronauts Raja Chari, Tom Marshburn, Kayla Barron, and German ESA astronaut Matthias Maurer began preparing for their departure in earnest about half a day prior on May 4th and boarded Dragon a few hours before undocking. Now verging on routine, Crew Dragon undocked from the ISS without issue at 1:20 am EDT on May 5th, kicking off a roughly 24-hour return to Earth.

Crew-3’s Dragon will perform a final deorbit burn shortly before midnight on May 6th and, if all goes well, the spacecraft’s reusable capsule will splash down off the coast of Florida a bit before 1am EDT. It will be Crew Dragon’s second astronaut reentry and splashdown in ten days after Axiom-1 completed the same process on April 25th.

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In just four weeks, SpaceX will have launched Ax-1, docked Ax-1 with the ISS, undocked and recovered Ax-1; launched Crew-4, docked Crew-4 with the ISS; and undocked and recovered Crew-3 – a series of eight major Dragon operations involving three of the company’s fleet of four reusable orbital spacecraft. Given the numerous delays suffered by all three missions as a result of their close proximity, it would be hardly surprising if NASA and SpaceX explicitly try to avoid that level of cadence for future ISS-related Dragon operations.

Nonetheless, SpaceX and NASA are already in the late stages of preparing an uncrewed variant of Dragon 2 for the company’s 25th ISS cargo delivery. CRS-25 is scheduled to launch as early as June 7th and will be SpaceX’s third Dragon launch and third mission to the ISS in less than two months. Later this year, SpaceX Dragons are scheduled to support CRS-26 in September, Axiom-2 as early as Q3 2022, Crew-5 in October, and Polaris Dawn – a free-flyer mission – in Q4 2022.

Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

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Tesla teases new market entrance with confusing and cryptic message

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(Credit: Tesla)

Tesla teased its entrance into a new market with a confusing and what appeared to be cryptic message on the social media platform X.

The company has been teasing its entrance into several markets, including Africa, which would be a first, and South America, where it only operates in Chile.

In September, Tesla started creating active job postings for the Colombian market, hinting it would expand its presence in South America and launch in a new country for the first time in two years.

Tesla job postings seem to show next surprise market entry

The jobs were related to various roles, including Associate Sales Manager, Advisors in Sales and Delivery, and Service Technicians. These are all roles that would indicate Tesla is planning to launch a wide-scale effort to sell, manage, and repair vehicles in the market.

Last night, Tesla posted its latest hint, a cryptic video that seems to show the outline of Colombia, teasing its closer than ever to market entry:

This would be the next expansion into a continent where it does not have much of a presence for Tesla. Currently, there are only two Supercharger locations on the entire continent, and they’re both in Chile.

Tesla will obviously need to expand upon this crucial part of the ownership experience to enable a more confident consumer base in South America as a whole. However, it is not impossible, as many other EV charging infrastructures are available, and home charging is always a suitable option for those who have access to it.

Surprisingly, Tesla seems to be more concerned about these middle-market countries as opposed to the larger markets in South America, but that could be by design.

If Tesla were to launch in Brazil initially, it may not be able to handle the uptick in demand, and infrastructure expansion could be more difficult. Brazil may be on its list in the upcoming years, but not as of right now.

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Tesla expands crucial Supercharging feature for easier access

It is a useful tool, especially during hours of congestion. However, it has not been super effective for those who drive non-Tesla EVs, as other OEMs use UI platforms like Google’s Android Auto or Apple’s iOS.

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tesla supercharger
Credit: Tesla

Tesla has expanded a crucial Supercharging feature that helps owners identify stall availability at nearby locations.

Tesla said on Tuesday night that its “Live Availability” feature, which shows EV owners how many stalls are available at a Supercharger station, to Google Maps, a third-party app:

Already offering it in its own vehicles, the Live Availability feature that Teslas have is a helpful feature that helps you choose an appropriate station with plugs that are immediately available.

A number on an icon where the Supercharger is located lets EV drivers know how many stalls are available.

It is a useful tool, especially during hours of congestion. However, it has not been super effective for those who drive non-Tesla EVs, as other OEMs use UI platforms like Google’s Android Auto or Apple’s iOS.

Essentially, when those drivers needed to charge at a Supercharger that enables non-Tesla EVs to plug in, there was a bit more of a gamble. There was no guarantee that a plug would be available, and with no way to see how many are open, it was a risk.

Tesla adding this feature allows people to have a more convenient and easier-to-use experience if they are in a non-Tesla EV. With the already expansive Supercharger Network being available to so many EV owners, there is more congestion than ever.

This new feature makes the entire experience better for all owners, especially as there is more transparency regarding the availability of plugs at Supercharger stalls.

It will be interesting to see if Tesla is able to expand on this new move, as Apple Maps compatibility is an obvious goal of the company’s in the future, we could imagine. In fact, this is one of the first times an Android Auto feature is available to those owners before it became an option for iOS users.

Apple owners tend to get priority with new features within the Tesla App itself.

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Elon Musk’s Boring Co goes extra hard in Nashville with first rock-crushing TBM

The Boring Company’s machine for the project is now in final testing.

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Credit: The Boring Company/X

The Boring Company is gearing up to tackle one of its toughest projects yet, a new tunnel system beneath Nashville’s notoriously tough limestone terrain. Unlike the soft-soil conditions of Las Vegas and Austin, the Music City Loop will require a “hard-rock” boring machine capable of drilling through dense, erosion-resistant bedrock. 

The Boring Company’s machine for the project is now in final testing.

A boring hard-rock tunneling machine

The Boring Company revealed on X that its new hard-rock TBM can generate up to 4 million pounds of grip force and 1.5 million pounds of maximum thrust load. It also features a 15-filter dust removal system designed to keep operations clean and efficient during excavation even in places where hard rock is present.

Previous Boring Co. projects, including its Loop tunnels in Las Vegas, Austin, and Bastrop, were dug primarily through soft soils. Nashville’s geology, however, poses a different challenge. Boring Company CEO and President Steve Davis mentioned this challenge during the project’s announcement in late July.

“It’s a tough place to tunnel, Nashville. If we were optimizing for the easiest places to tunnel, it would not be here. You have extremely hard rock, like way harder than it should be. It’s an engineering problem that’s fairly easy and straightforward to solve,” Davis said.

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Nashville’s limestone terrain

Experts have stated that the city’s subsurface conditions make it one of the more complex tunneling environments in the U.S. The Outer Nashville Basin is composed of cherty Mississippian-age limestone, a strong yet soluble rock that can dissolve over time, creating underground voids and caves, as noted in a report from The Tennessean.

Jakob Walter, the founder and principal engineer of Haushepherd, shared his thoughts on these challenges. “Limestone is generally a stable sedimentary bedrock material with strength parameters that are favorable for tunneling. Limestone is however fairly soluble when compared to other rack materials, and can dissolve over long periods of time when exposed to water. 

“Unexpected encounters with these features while tunneling can result in significant construction delays and potential instability of the excavation. In urban locations, structures at the ground surface should also be constantly monitored with robotic total stations or similar surveying equipment to identify any early signs of movement or distress,” he said.

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